{"id":34364,"date":"2025-05-04T02:58:00","date_gmt":"2025-05-04T02:58:00","guid":{"rendered":""},"modified":"2025-09-08T04:18:58","modified_gmt":"2025-09-08T10:18:58","slug":"cve-2015-2079-remote-code-execution-vulnerability-in-usermin","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2015-2079-remote-code-execution-vulnerability-in-usermin\/","title":{"rendered":"CVE-2015-2079: Remote Code Execution Vulnerability in Usermin<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

The Common Vulnerabilities and Exposures system, commonly referred to as CVE, has identified a significant security flaw within versions 0.980 through to 1.x before 1.660 of Usermin. This vulnerability, designated CVE-2015-2079, is a key concern for system administrators and cybersecurity professionals. Its criticality stems from the fact that successful exploitation could lead to remote code execution<\/a>, potentially compromising system security or resulting in data leakage.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2015-2079
\nSeverity: Critical (9.9 CVSS score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Remote code execution<\/a>, potential system compromise, and data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Usermin | 0.980 through 1.x before 1.660<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability exists within the uconfig_save.cgi functionality<\/a> of Usermin. Specifically, it arises as Usermin incorrectly uses the two-argument form of Perl’s open function in the sig_file_free parameter. As a result, it does not properly neutralize special elements, leading to a potential injection vulnerability<\/a>. An attacker can exploit this by crafting a special payload, which, when processed, can lead to remote code execution<\/a>.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Below is a
\nconceptual<\/strong>
\n example of how the vulnerability might be exploited<\/a>. This could be a sample HTTP request, shell command<\/a>, or pseudocode:<\/p>\n

POST \/uconfig_save.cgi HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nsig_file_free=|; malicious_command_here ;|<\/code><\/pre>\n
In the above example, “malicious_command_here” would be replaced with the actual command an attacker wishes to execute<\/a> on the target system.<\/p>\n
Mitigation and Conclusion<\/strong><\/p>\n
To mitigate this vulnerability, affected users should apply the vendor-supplied patch for Usermin immediately. If the patch cannot be applied at once, a web application firewall (WAF) or intrusion detection system (IDS) can be used as a temporary measure to help protect against potential<\/a> exploits. However, these are not long-term solutions and the patch should be applied as soon as feasible.
\nRemember, staying updated on the latest vulnerabilities and patches is a critical<\/a> aspect of maintaining a secure and robust cybersecurity posture. Stay safe and always keep your systems updated.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The Common Vulnerabilities and Exposures system, commonly referred to as CVE, has identified a significant security flaw within versions 0.980 through to 1.x before 1.660 of Usermin. This vulnerability, designated CVE-2015-2079, is a key concern for system administrators and cybersecurity professionals. Its criticality stems from the fact that successful exploitation could lead to remote […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-34364","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-rce"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t